CHDK is not for DSLR cameras. Apparently someone has added DSLR cameras to the CHDK camera status list, but they really shouldn't be listed under "it's just a matter or porting" because it's just not a matter of porting -- it's about strarting from scratch (or from the Magic Lantern project?) to create something more or less completely different.

So for those EOS lines on that page, blue means someone's been able to dump the firmware (meaning a skilled an brave person could try to create a hack for it) and purple means someone's working on some sort of a hack. But it's not CHDK.